The room's walls were damp and had mold. There was moisture on the closed window especially when it rained. Of course, the window curtain was damp and had mold. The room was cold and very humid. There was no temperature regulation, no vent to rid the humidity in either the bathroom or room. The bathroom also had mold. When I first checked into the room, the floor was obviously moist. Two days later, the floor was still moist until house keeping dried it. The bed sheet/blanket/pillows all felt damp. The piece of silk cloth with the hotel name was the only dry one, so I slept on it. I had a chance to see a couple rooms one floor down on 3rd floor, they were equally terrible. The only good were wifi, friendly guys at reception, and minutes of walk to beautiful lake Hoan Kiem. I told a receptionist about the moisture and mold problems. He replied, "it's the season." I didn't bother to ask for a room change because I likely will get an equally terrible room and maybe with bad wifi. The walls along the stairs up into my room all felt damp. The room didn't even have a small closet. ZERO star for the room and the building.